The helicopter crash landed when one of its two engines cut out.
直升飞机两个发动机中的一个突然熄火时，直升机撞地着陆。
When one animal attacks another, it engages in the most obvious example of aggressive behavior.
当一只动物攻击另一只动物时，它会做出最明显的攻击行为。
What happens when one enters a dream state?
人在进入睡梦时会发生什么？
"Well," said she, "when one goes another may as well follow."
“好吧。”她说，“一个人走了，另一个人大概也跟着走。”
A gift is necessary when one is invited to visit friends in China.
在中国，应邀去拜访朋友时，礼物是必要的。
There are occasions when one must yield.
任何人都有不得不低头的时候。
The old sofa scrunched when one sat in it.
那个旧沙发一坐上去就发出响声。
One should try to learn more when one is young.
一个人应该趁着年轻的时多学点东西。
When one has the names, one finds the subject.
有了名字，主题也就有了。
One does not lose the sight when one has love.
有了爱便说不上失明。
When One-One won one race, Two-Two won one, too.
当一一嬴了一场比赛，二二也嬴一场比赛。
When one total matches the other, they are home.
等到两者总数吻合时，就"到家"了。
How can one love when one is removed from everything?
当一个人远离一切，他如何能去爱呢？
Grief strikes when one comes home to the empty house.
而当一个人回家后面对空空的房间时，悲伤才会来袭。
Birthdays come around too quickly when one is older.
一个人年纪大了生日就会到来得非常快。
The problem arises when one of these cycles is broken.
问题就在于其中一个睡眠循环周期被打破了。
You never know when one of these could just do the trick.
你永远不会知道，里面的哪个正好是这样子的。
Affairs when one or both partners are married are still taboo.
一个或者两个合伙人发生办公室恋情的事情还是禁忌。
What happens when one part of your body fails to function?
如果我身体的某一部分不作用会怎样？
True friends don't desert each other when one is facing trouble.
当其中一人面临困难时，真正的朋友是不会抛弃对方的。
You can then reload the model when one merge session is finished.
然后您就可以在完成一次合并之后，重新载入模型。
Often when one leaves a company, the project must be left behind.
常常，一个人离开了公司后，其从事的项目也就停了下来。
When one is busy, the other is available to do something else.
当一方工作忙时，另外两个人还可以做个伴。
When one person repeats their opinion, we simply over apply the rule.
当有人重复他的观点时，我们只是遵守之前的规则而已。
This happens when one escapes text that has already been escaped.
如果转义已经转义的文本就会出现这种情况。
When one firm shuts a factory, the other cannot fill the void quickly.
一旦一个公司关闭工厂，供应缺口很难迅速得到填补。
When one application is calling another, make that call asynchronously.
当一个应用程序调用其它的应用程序时，进行异步调用。
When one application is calling another, make that call asynchronously.
当一个应用程序调用其它的应用程序时，进行异步调用。
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